Hi everyone, just joined the forum. own an 07 S4Rs, and plan to use it as a mule for an upcoming tuning shop. Always a little concerned about why the monster is so much slower than the other bike with the same engine. Since i went embarrassingly slow at the Maxton Mile; it is time to get scientific and find the power. it is possible that half of my problem is the need for additional fuel and gear. i dug into the specs for cam phasing, and it sure looks like the cams are set for grunt and emissions compliance. The catalyst looks pretty big, and i suspect the stock mufflers are a bigger issue than the cat. So......i'll put a wideband on it, and dial up my cams to see if they are near the book-specs.
IF someone else out there knows answers to these questions it will help going into this project;
1. Does the 999 have more compression, or bigger valves. Does it use the same cams? same center-lines?
2. if i'm looking for top-end numbers, is this engine done at 9500? or should i gear it for 10, or 10.5?
3. the stock airbox and noise blanket look pretty muffled for sound regs. does anyone know if venting the lid or running without it really boosts power potential.
4. it looks like the better duck pips have a siamesed junction like an expipe popular on V8s. Wonder it the cat-box on the monster kills power and needs to be replaced with the termi / 916 style junction. Thanks!! Snotty Scotty
You'd be best off posting these questions in the Tech section - they will get a lot more eyes on them there. This is just the social introduction section [thumbsup]
Welcome to the DMF! :)
I have to second the suggestion of posting your questions in Tech (http://ducatimonsterforum.org/index.php?board=4.0), you will get a lot more knowledgeable help there.
Good luck in getting your S4RS tuned properly! [thumbsup]